A book about eMarketing, is that still of any value in this online era? You can find almost anything online with a simple search query: what can a book add to that? Indeed, information about the topics covered in this book is also widely available online. Nevertheless, especially in this era of rapid digital developments, a book provides structure and overview. It distinguishes the main issues from the side issues, without being distracted by too much details. This book offers practical and readily applicable knowledge, necessary to be involved in online marketing in a commercial context. It presents an introduction to the main topics of this dynamic field of study, such as search engine marketing, website planning, metrics and monitoring, online promotion, price setting and e-marketing planning. After reading and studying this book, you are thoroughly introduced in online marketing, have familiarized yourself with it, and are able to identify its key concepts. By means of many recent examples, the theory is directly applied to practical situations. And, in the spirit of Web 2.0 and crowdsourcing: if you have ideas or suggestions related to this book, please inform the authors!